Which of the following describes how the sense of smell differs from the other special senses? (1.0 points)
A)Smell is always processed in the hypothalamus, whereas the other senses are processed in the cerebral cortex.
B)Smell is the only sensory modality that does not synapse in the thalamus before connecting to the cerebral cortex.
C)Smell is the only chemical sense.
D)Smell is the only sensory modality that is processed in the cerebral cortex.

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).